Apple said it is supporting the development of what it claims is the first-ever direct carbon-free aluminum smelting process and that the first batch of this low-carbon aluminum is being used in production of the 16-inch MacBook Pro.

article: https://www.marketwatch.com/story/apple-joins-tech-rivals-with-pledge-to-be-100-carbon-neutral-by-2030-2020-07-21?mod=rachel-koning-beals